喷涂-烧结法制备SiC涂层及抗冲蚀性能的研究  

Research on the Preparation of SiC Coatings and Their Erosion Resistance by the Spray-Sintering Method

作　　者：李媛琪 王博 王龙 李安 李佳艳[1,2] LI Yuan-qi;WANG Bo;WANG Long;LI An;LI Jia-yan(School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China;Key Laboratory of Energy-carrying Beam Metallurgy and Advanced Materials Preparation of Liaoning Province,Dalian 116024,China)

机构地区：[1]大连理工大学材料科学与工程学院,大连116024 [2]辽宁省载能束冶金与先进材料制备重点实验室,大连116024

出　　处：《中国陶瓷》2024年第11期37-45,共9页China Ceramics

基　　金：第一代光伏组件回收成果转化示范研究(2021FRD05006)。

摘　　要：为了提高低密度C/C复合材料的抗冲蚀性能,使用喷涂-烧结法在其表面制备了均匀完整的SiC涂层,研究了反应原材料中蔗糖、葡萄糖、活性炭、磷粉四种碳源对SiC涂层的物相组成、微观形貌以及抗冲蚀性能的影响。结果表明:碳源种类对涂层中的物相组成产生影响,蔗糖和葡萄糖作为碳源时涂层均以单一的SiC物相存在,在10次冲蚀性能测试后涂层仍完整覆盖基体表面,冲蚀损失率分别为1.288%和1.144%,可能是由于残碳现象的改善以及大体积SiC颗粒的生成使冲蚀粒子发生了回弹作用,导致抗冲蚀性能提升。To enhance the erosion resistance of low-density C/C composite materials,a uniform and intact SiC coating was prepared on its surface by the spray-sintering method.The influence of carbon source in the reaction raw materials on the phase composition,microstructure,and erosion resistance of SiC coating was investigated.The results indicated that the type of carbon source affected the phase composition of the coating.When sucrose and glucose were used as carbon sources,the coating consisted solely of a single SiC phase.After ten erosion performance tests,the coating remained completely covered the substrate surface,with erosion loss rates of 1.288%and 1.144%,respectively.This may be due to the improvement of the residual carbon phenomenon and the generation of large-volume SiC particles,which induced a rebound effect on the eroding particles.

关 键 词：喷涂-烧结法 低密度C/C复合材料 SIC涂层 碳源 抗冲蚀性能 

分 类 号：TB332[一般工业技术—材料科学与工程]